365440121 has 4 divisors (see below), whose sum is σ = 377228544. Its totient is φ = 353651700.

The previous prime is 365440111. The next prime is 365440133. The reversal of 365440121 is 121044563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-365440121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (365440111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5894165 + ... + 5894226.

It is an arithmetic number, because the mean of its divisors is an integer number (94307136).

Almost surely, 2^365440121 is an apocalyptic number.

365440121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

365440121 is a deficient number, since it is larger than the sum of its proper divisors (11788423).

365440121 is a wasteful number, since it uses less digits than its factorization.

365440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11788422.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 365440121 is about 19116.4881973651. The cubic root of 365440121 is about 714.9440815642.

Adding to 365440121 its reverse (121044563), we get a palindrome (486484684).

The spelling of 365440121 in words is "three hundred sixty-five million, four hundred forty thousand, one hundred twenty-one".